Harness stop-motion for looms.



E. GAGNON.

HARNESS STOP MOTION FOR LOOMS.

APPLIOATiQN FILED DEC. 20, 1913.

Patented Mar. 30, 1915.

2 SHEETS-SHEET 1.

z II I 7//// WiTnesses. Inventor 2 .Erasme Gagnon, W4 Z2- ymm&m

Afly's.

E. GAGNON.

HARNESS STOP MOTION FOR LOOMS. APPLICATION FILED DEC. 20, 1913.

Patented Mar. 30, 1915.

2 SHEETS-SHEET 2.

upon the breakage of l riailnw ERASZB'IE *GAGE'GEZ, 0F EHODE ISTZAND, ASSIGNQB TO DBAPEE COEPANY, 935 E OPE'L ALE, MASSACHUSETTS, A COBPGEATION OF MAINE.

EABNESS STGP-MOTIDN FOB LOGBZS.

specification of Letters Patent.

Patented Mar. 3%,

Application filed Lecember 20, 1913. Serial No. 8073M.

To all whom it may concern:

Be it known that 1, Erasers Gannon, a citizen of the United States, and resident of Pawtuclret, county of Providence, State of Rhode island, have invented an improvement in Harness Stop-Motions for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention has for its object the pro duction of means whereby the operation of a loom may be stopped automatically upon the breakage of an overhead suspending connection of any one of the series of reciprocating harness frames.

The invention provides means connected with each suspending means and released any such suspending means, or upon the abnormal slackness thereof due to the breakage of anyparts connected therewith, to move into a position to actuate the loom stopping mechanism.

In the present embodiment of the invention a usual form of warp stop motion is made use of for stopping the loom and is actuated for that purpose upon the break: age of a harness frame suspending means through mechanism provided by this invention.

The various novel features of my invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the appended claims.

Figure 1 is a side elevation partially in cross section and looking from the interior of the loom of so much of an ordinary form of loom as is necessary to illustrate the loom stopping mechanism and parts connected therewith; Fig. 2 is an end elevation of the loom arch and connected parts of an ordinary loom showing a preferred form of mechanism but embodying my invention 1n connection therewith; Fig. 3 is a plan View partially in horizontal cross-section of a portion of the construction shown in Fig.2.

It is unnecessary to describe in detail the general features of the loom illustrated herein because the construction is a well known and familiar one. The patent to Stone No.

996,297 ranted June 27, 1911, illustrates this type of 00m and also the type of warp stop motion shown herein as the means for stopping the operation of the loom. The patent to Boii'ert l lo. 79%,922 granted July 18, 1905 also shows a similar type of loom and certain additional features to the usual warp stop motion which are herein made use of for convenience in connection with the present invention.

The lay l, the cam shaft 2, the breast beam 3, the shipper e acting when released to throw 0d the power from the loom through any suitable instrumentality forming no part of the invention and not herein shown, and the remaining general features of the loom are all as shown in the aforesaid patents. So also, the warp stop motion is of the familiar type comprising the drop de- -vices or detectors 5, each suspended from a warp thread and descending into the lowermost position by failure or undue slackness of its warp thread. the double feeler 6 carried by the rock shaft 7 and normally vibrated back and forth below the ends of the detectors, the cam 8 on the shaft 2 for vibrating the feeler 6 through the medium of the links 9, the arms 10 and the follower 11 pivoted at 12 on the hooked link 13, the tappets 14; on the cam shaft 2 all operating as described in the aforesaid patents.

I have shown the loom as provided with four harness frames, but it is obvious that the invention is equally applicable to any number. These harness frames 15 may be of any usual construction and provided with any of the usual forms of heddles. So also they may be operated in any suitable manner. The operatingconnections for drawing the frames down are not illustrated, but the suspending means or. connections of a preferred and usual form are shown in Fig. 2., In this form the loom arch 16 is provided with upwardly extending brackets 17 18 in which are journaled rollers or pulleys 19, 20, one in each bracket for each harness mounted cam shaped pulleys 21, one for each harness "frame. The flexible connections forming the part of the suspending means are shownas the usual straps 22 ad ustably connected by hooked bars 23 near each end of the frame, extending up over the pulleys 19 and 20, and then united as by the hook 24 and passing around the pulley -21 and connected by another hooked bar 2.5 to a coiled spring 26 having a metal loop 27 at its end engaging 3 lug 28 on the bracket 17. Similar connections are provided for each harness vframe, while in thebracket 18 are also frame and with the usual adjustable sections 29. In the operation of the harness frames the lower portion of each frame is usually connected .to and operated from cams on the cam shaft, as, for example, as shown in the patent'to Whitehead No. 996,725, granted August 9th, 1910, so that at the required times to form the proper shed the proper harnessframes are depressed. This action takes place against the action of the suspending means which in turn act to lift and restore the harness frames to uppermost poous-warp and other breakage may occur. In

this invention .the breakage or abnormal slackening of the-suspending connections is made useof to release connections which act tostop the loom. In the particular form illustrated for this purpose the loop 27 at the end of each suspending means 15 made considerably longer than the lug 28; \Vhen the parts are in proper wrking order the harness frames will throng the springs 26 hold the outer end of each loop 27 up against the outer end of each lug 28, as shown in Fig. 2. If now any suspending connection breaks at either end of any harness frame, or if any connection acting to draw any frame downward breaks, the corresponding loop 27 at the end of the connection will be released and will either have or will be capable of having a movement to the left, viewing Fig. 2, to the extent of the difference in len th between the slot in the loop 27 and the ug .28. This movement is made use of herein for effecting the stoppage of the loom. For this purpose a plate 30 is secured to and projects from the bracket -17. Bearing pins or shafts 31 project from this plate one for each bank of harness frames. In the arrangement shown there are two banks of harness frames, and consequently two shafts 31. On each shaft 31 is mounted a bell crank lever 32 for each suspending means of the harness frame in its bank. In the construction illustrated there are four harness framesftwo in the upper bank and two in the lower, and consequently, there are two bell ,crank levers 32 pivoted on each shaft 31; Each bell crank lever is normally moved by a coil spring 33 connected to one of two pins 34 projecting outwardly from the plate 30. These bell crank levers constitute actuators and are positively moved by the springs 33. These actuators, it will be observed thus corresponding plunger 42 is depressed and have their movement'with 'or rela tively to the corresponding frame and suspending means. Each actuator is connected with its corresponding harness frame sus-' pending'means and by it held againstmovement. In the construction illustrated this is secured by forming an eye 35 on the end of each loop'27 and through this eye the corresponding short 'arm' of the actuator 32. projects. It will thus be seen that the parts are normally held in the position shown in Fig. 2. If now any suspending means breaks or becomes abnormally slackened it releases its corresponding actuator which thereupon is positively moved by means of its corresponding spring into abnormal position. Each of these actuators is arranged to effect the stopping the loom when thus moved, and this result is secured preferably by the construction illustrated. On the loom arch at 36 is pivoted a trigger device, the shorter arm 37 of which extends horizontally and the longer arm of which 38 projects downwardly adjacent to a vertical rod 39 having an offset end 40, and pivotally connected at 41 to, and consequently vertically reciprocated by, the vibrating feeler 6. This rod 39 may be and for convenience vis the same as that shown in the patent to Boivert previously referred to, and may have the same functions in the loom. Each actuator 32 has'pivotally connected therewith a plunger 42 guided in a bracket 43 projecting from the loom frame and presenting a bent end 44 which when the parts are in normal position rests against ger in inactive position, as shown in Fig. 2. But whenever any actuator 32 is released its the trigger is swung carrying the arm 38 into the path of the end 40 of the rod 39. The arm 38 is provided with a hooked shaped end 45 which immediatelycatches upon the end 40 of the rod 39, and locks that rod against movement, and consequently 110 looks the warp stop motion in the same manner as 3-" it had been locked by one of the detectors -10. and consequently the stopping of the loom is at once effected.

For convenience of construction the trig- 11 ger device is shown as made in separate parts. The short arm 37 is secured at one end to the pivotal shaft 36 and the long arm 38 to the other end of this shaft and the shaft itself which forms the pivot of the 12 trigger is journaled in a bearing bracket 46 secured at 47 to the face of the arch. This enables the long arm of the trigger to be positioned readily in the path of the rod 39.

It will be seen that the invention is not 12 dependent upon the particular form of connections or suspending means for the harness frames nor upon the particular construction of loom stopping-mechanism and that varying changes or modifications may '100. the arm 37 of the trigger and holds the trigters Patent is:

be made by those skilled in the art without departing from the spirit and scope of the invention as set forth in the annexed claims.

Having fully described my invention, what I claim as new and desire to secure by Let- 1. In a loom, the combination of a plurality of reciprocating harness frames each having overhead lifting and suspending means, a warp stop motion including :1 vibrating feeler. a vertically movable rod connected with the vibrating feeler, a trigger normally out of, but when moved into, the path of said rod acting to lock the rod against movement and so through the medium of the warp stop motion to stop the loom, an actuator for each suspending means cooperating with said trigger, and means released by the breakage of a suspending means to move its corresponding actuator and cause it to swing the trigger into the path of said rod.

2. A loom comprising a plurality of reciprocating harness frames each having overhead lifting and suspending means, loom stopping mechanism, and spring actuated means mounted for movement with respect to each frame and suspending means and released upon the breakage or abnormal slackness of .the suspending means to move under its spring actuation into a position to actuate the loom stopping mecha nism.

3. A loom comprising a plurality of reciprocatin harness frames each having overhead ifting and suspending means, loom stopping mechanism, and a means mounted for movement with respect to each frame and suspending means and held'out of actuating position by connections to each suspending means and acting when released to move into a position to actuate the loom stopping mechanism.

4. In a loom comprising a plurality of reciprocating harness frames each having overhead lifting and suspending means, a warp stop motion including a vibrating feeler, an element connected to and vibrating with said feeler and spring actuated means connected with each suspending means and released upon the breakage theretuators one connected with each suspending .means and mounted for movement with respect to said suspending means and its frame and moved upon the breakage of said suspending means into actuating position,

loom stoppingmeans, and means for actuating said loom stopping means to stop theloom operated by the movement of any actuator into actuating position.

6. In a loom a plurality of reciprocating harness frames each having overhead lifting apd suspending connections terminating in a loop, lugs to receive and hold said loops and of materially less length than the loops wherebyupon the breakage of any connection the corresponding loop may move with respect to its lug, an actuator pivotally mounted adjacent each loop, a spring acting to draw the actuator away from the loop, connections between the loop and actuator normally to hold the spring under tension, a loom stopping mechanism including 'a'vibrating element, a trigger and connections between said trigger and each of said actuators whereby upon the breakage of either suspending connection the corresponding actuator moved by its spring will throw the trigger into the path of said vibrating element and stop the loom.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

1 ERASME GAGNON.

Witnesses:

Ann: LAMBERT, HENRY K. WHITE. 

